Shenzhen is located within the Pearl River Delta, bordering Hong Kong to the south, Huizhou to the north and northeast, Dongguan to the north and northwest. Lingdingyang and Pearl River to the west and Mirs Bay to the east and roughly 100 kilometres (62 mi) southeast of the provincial capital of Guangzhou. The municipality covers an area of 1,991.64 square kilometres (769 sq mi) including urban and rural areas, with a total population of 10,358,381 at the 2010 census. It makes up part of Pearl Delta River built-up area with 44,738,513 inhabitants, spread over 9 municipalities (including Macau). The city is elongated measuring 81.4 kilometers from east to west while the shortest section from north to south is 10.8 kilometers.
Rivers and Reservoirs
Over 160 rivers or channels flow through Shenzhen. There are currently 24 reservoirs within the city limits with a total capacity of 525 million tonnes.
Notable rivers in Shenzhen include the Shenzhen River, Maozhou River and Longgang River.
Although Shenzhen is situated about a degree south of the Tropic of Cancer, due to the Siberian anticyclone, it has a warm, monsoon-influenced, humid subtropical climate (Köppen Cwa). Winters are mild and relatively dry, due in part to the influence of the South China Sea, and frost is very rare; it begins dry but becomes progressively more humid and overcast. However, fog is most frequent in winter and spring, with 106 days per year reporting some fog. Early spring is the cloudiest time of year, and rainfall begins to dramatically increase in April; the rainy season lasts until late September to early October. The monsoon reaches its peak intensity in the summer months, when the city also experiences very humid, and hot, but moderated, conditions; there are only 2.4 days of 35 °C (95 °F)+ temperatures. The region is prone to torrential rain as well, with 9.7 days that have 50 mm (1.97 in) or more of rain, and 2.2 days of at least 100 mm (3.94 in). The latter portion of autumn is dry. The annual precipitation averages at around 1,970 mm (78 in), some of which is delivered in typhoons that strike from the east during summer and early autumn. Extreme temperatures have ranged from 0.2 °C (32 °F) on 11 February 1957 to 38.7 °C (102 °F) on 10 July 1980.